Fellow traders, first time post and hoping not to get "flamed" right out of the box. I would like to ask (humbly) for some imput from the experienced calendar and diagonal traders out there of my impressions of my first simple calendar,still an open trade. This is a bit of an educational trade, and I am learning from it. My first realization is that the "tent" i.e the price range of underlying breakeven to B/e at expiration of a single long position is only a fraction of a 30 day STD. Deviation, leading me to realize that 2/3rds of the time at least one adjustment would be required, usually transitioning to a double calendar of some type. Is it the common experience that the majority of times an income (theta capture) calendar requires adjustments? My next realization is the importance of I.V., that it be very near historic low I.V. in back month , in proper skew to front I.V., as even a balanced decline in front/back I.V. changes P. into L. I am becoming aware that sucessful horizontal time spreading is an art, and would appreciate any feedback or tips on good resources. Thanks and good trading to all. James ,from Marin Ca.