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The majority of local operations occur during daylight hours and during good weather. A small percentage will occur during bad weather. A small percentage will also occur during nighttime to accompany training requirements that require night flying, or as a convenience to pilots who cannot fly during the day. Based upon preliminary surveys of local operations at San Marcos, it appears that operations there do not differ significantly from other airports in central Texas. Figure 1.5 shows the estimated hourly breakdown for local operations during a typical VFR day. Significant local activity will beqin at approximately 7:00 a.m., continuing until about 9:00 p.m. in the evening. The largest numbers of operations will take place between 10:00 a.m. and 6:00 p.m. San MarCXlS generally experiences excellent flight weather for most of the year, and with the exception of relatively rare periods of extended bad weather during the winter months, there are no chronic meteorological constraints to flying activity. There are seasonal variatia1S, bIt they are not extreme. on a weekly basis, it has been determined that weekends are more active in terms of local operations than itinerant activity, largely because of the traini.nq and pleasure aspects of local flight. PeBk .Activity Pedal In the following paragraphs, peak hour, peak day, and business activity will be ocosi.dered. FeBIt am: Ifraffic Peak tx)ur traffic is defined as the one hour period each day that the ai:r;port experiences the maximum. number of operations, and is useful for oompariscm of ai:r;port capacity versus forecast levels of activity. In the case of San Marcos, it does not appear likely that aircraft activity will exceed capacity. Nonetheless, forecasts of peak hour activity have been prepared. 1.11