[Recorder] Day in filename is often wrong

### Affected hardware version

Bangle 2

### Your firmware version

2v19

### The bug

1. Open recorder
2. Start recording
3. Stop recording after a few data points have been recorded
4. view the file that was created

From my experience, about 50% of the recording files have a name that is a day later than the date it was recorded on.

My timezone on watch is set to GMT-8. This is likely the cause of the issue.

### Installed apps

widlock (0.08), sched (0.22), sched (0.22), widalarm (0.01), messageicons (0.05), boot (0.59), notify (0.13), clock_info (0.07), gpsinfo (0.12), bikespeedo (0.06), gpsnav (0.08), dtlaunch (0.24), bwclk (0.33), widmsggrid (0.05), widminbt (0.01), widgps (0.09), slides (undefined), magnav (0.06), quicklaunch (0.15), runplus (0.22), kbswipe (0.09), clkinfostopw (0.03), mylocation (0.10), clkinfosunrise (0.03), configurable_clock (0.03), locale (0.17), sleeplog (0.15), widclk (0.08), gpsmagcourse (0.01), waypoint_editor (0.03), rebbleagenda (0.01), weather (0.26), clkinfocal (0.02), ios (0.15), waypoints (0.03), setting (0.68), messagegui (0.75), messages (0.62), fastload (0.06), fastreset (0.03), flashcount (0.01), widbatv (0.03), alarm (0.46), health (0.28), openstmap (0.27), recorder (0.37), myprofile (0.01)