diff --git a/lib/std/date_time.zig b/lib/std/date_time.zig
index 97acb9277ab1..9dac8c1225b9 100644
--- a/lib/std/date_time.zig
+++ b/lib/std/date_time.zig
@@ -12,24 +12,24 @@ pub fn DateTime(comptime DateT: type, comptime TimeT: type) type {
         ///   9 = nanoseconds
         pub const EpochSubseconds = std.meta.Int(
             @typeInfo(Date.EpochDays).Int.signedness,
-            @typeInfo(Date.EpochDays).Int.bits + std.math.log2_int_ceil(usize, Time.fs_per_day),
+            @typeInfo(Date.EpochDays).Int.bits + std.math.log2_int_ceil(usize, Time.subseconds_per_day),
         );
 
         const Self = @This();
 
-        /// New date time from fractional epoch seconds.
+        /// New date time from fractional seconds since `Date.epoch`.
         pub fn fromEpoch(subseconds: EpochSubseconds, time_opts: Time.Options) Self {
-            const days = @divFloor(subseconds, s_per_day * Time.fs_per_s);
+            const days = @divFloor(subseconds, s_per_day * Time.subseconds_per_s);
             const new_date = Date.fromEpoch(@intCast(days));
-            const day_seconds = std.math.comptimeMod(subseconds, s_per_day * Time.fs_per_s);
+            const day_seconds = std.math.comptimeMod(subseconds, s_per_day * Time.subseconds_per_s);
             const new_time = Time.fromDaySeconds(day_seconds, time_opts);
             return .{ .date = new_date, .time = new_time };
         }
 
-        /// Returns fractional epoch seconds.
+        /// Returns fractional seconds since `Date.epoch`.
         pub fn toEpoch(self: Self) EpochSubseconds {
             var res: EpochSubseconds = 0;
-            res += @as(EpochSubseconds, self.date.toEpoch()) * s_per_day * Time.fs_per_s;
+            res += @as(EpochSubseconds, self.date.toEpoch()) * s_per_day * Time.subseconds_per_s;
             res += self.time.toDaySeconds();
             return res;
         }
diff --git a/lib/std/time.zig b/lib/std/time.zig
index 817a6af8562c..99e2e4562baa 100644
--- a/lib/std/time.zig
+++ b/lib/std/time.zig
@@ -367,27 +367,27 @@ pub fn Time(precision_: comptime_int, comptime has_offset: bool) type {
         const Self = @This();
 
         pub const precision = precision_;
-        pub const fs_per_s = multiplier;
-        pub const fs_per_min = 60 * fs_per_s;
-        pub const fs_per_hour = 60 * fs_per_min;
-        pub const fs_per_day = 24 * fs_per_hour;
+        pub const subseconds_per_s = multiplier;
+        pub const subseconds_per_min = 60 * subseconds_per_s;
+        pub const subseconds_per_hour = 60 * subseconds_per_min;
+        pub const subseconds_per_day = 24 * subseconds_per_hour;
 
         pub const Options = struct {
             offset: IMinutes = 0,
         };
 
         pub fn fromDaySeconds(seconds: DaySubseconds, options: Options) Self {
-            const fs_offset = @as(IDaySubseconds, options.offset) * fs_per_min + seconds;
-            var fs = std.math.comptimeMod(fs_offset, fs_per_day);
+            const fs_offset = @as(IDaySubseconds, options.offset) * subseconds_per_min + seconds;
+            var fs = std.math.comptimeMod(fs_offset, subseconds_per_day);
 
-            const hour: Hour = @intCast(@divFloor(fs, fs_per_hour));
-            fs -= @as(DaySubseconds, @intCast(hour)) * fs_per_hour;
+            const hour: Hour = @intCast(@divFloor(fs, subseconds_per_hour));
+            fs -= @as(DaySubseconds, @intCast(hour)) * subseconds_per_hour;
 
-            const minute: Minute = @intCast(@divFloor(fs, fs_per_min));
-            fs -= @as(DaySubseconds, @intCast(minute)) * fs_per_min;
+            const minute: Minute = @intCast(@divFloor(fs, subseconds_per_min));
+            fs -= @as(DaySubseconds, @intCast(minute)) * subseconds_per_min;
 
-            const second: Second = @intCast(@divFloor(fs, fs_per_s));
-            fs -= @as(DaySubseconds, @intCast(second)) * fs_per_s;
+            const second: Second = @intCast(@divFloor(fs, subseconds_per_s));
+            fs -= @as(DaySubseconds, @intCast(second)) * subseconds_per_s;
 
             return .{
                 .hour = hour,
@@ -404,9 +404,9 @@ pub fn Time(precision_: comptime_int, comptime has_offset: bool) type {
 
         pub fn toDaySecondsZone(self: Self, zone: IMinutes) DaySubseconds {
             var sec = @as(IDaySubseconds, zone) * 60 * multiplier;
-            sec += @as(IDaySubseconds, self.hour) * fs_per_hour;
-            sec += @as(IDaySubseconds, self.minute) * fs_per_min;
-            sec += @as(IDaySubseconds, self.second) * fs_per_s;
+            sec += @as(IDaySubseconds, self.hour) * subseconds_per_hour;
+            sec += @as(IDaySubseconds, self.minute) * subseconds_per_min;
+            sec += @as(IDaySubseconds, self.second) * subseconds_per_s;
             sec += @as(IDaySubseconds, self.subsecond);
 
             return std.math.comptimeMod(sec, s_per_day * multiplier);