| AnnotateDaylight | Annotate ggplot with a band indicating solar events |
| AnnotateLunarphase | Annotate ggplot with lunar phases |
| annotate_daylight | Annotate ggplot with a band indicating solar events |
| annotate_lunarphase | Annotate ggplot with lunar phases |
| annotate_periodstates | Annotate a period in an hourglass plot |
| bats | Observations from a bat detector |
| CoordHourglass | Hourglass coordinates for a ggplot |
| coord_hourglass | Hourglass coordinates for a ggplot |
| GeomHourglass | Add an 'hourglass' layer to a ggplot |
| geom_hourglass | Add an 'hourglass' layer to a ggplot |
| get_date | Functions to split datetime into date and time of day |
| get_hour | Functions to split datetime into date and time of day |
| lunar_phase_polygon | Get the shape of the illuminated part of the moon |
| StatHourglass | A ggplot2 'stat' function to wrangle data for 'geom_hourglass'. |
| stat_hourglass | A ggplot2 'stat' function to wrangle data for 'geom_hourglass'. |
| uses_dst | Test if datetime object potentially uses daylight saving time |